/*
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 * and open the template in the editor.
 */

package Servlets;

import Beans.Ciudad;
import Beans.Hotel;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.LinkedList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


public class ListarHoteles extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    private Connection con;
    public void init() throws ServletException{
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql://localhost/Agencia","root","root");
        }
        catch(Exception ex){
            throw new UnavailableException("Error: "+ex.getMessage());
        }
    }
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        LinkedList<Hotel> listaH=new LinkedList<Hotel>();
        try{
                PreparedStatement ps= con.prepareStatement("SELECT * FROM Hotel");
                ResultSet rs=ps.executeQuery();
                while(rs.next()){
                     Ciudad c=BuscarCiudadId(rs.getInt("CodCiudad"));
                     Hotel h = new Hotel(rs.getString("Nombre"),rs.getInt("Clasificacion"),null,c);
                     h.setIdHotel(rs.getInt("IdHotel"));                     
                     Blob blob=rs.getBlob("Foto");
                     if(blob!=null){
                     byte[] data=blob.getBytes(1, (int)blob.length());                     
                     h.setUnaFoto(data);
                     }
                     listaH.add(h);
              }
                request.setAttribute("listaH", listaH);
                RequestDispatcher dispatcher=request.getRequestDispatcher("Baja-Mod-Hotel.jsp");
                dispatcher.forward(request, response);
            }
            catch(SQLException ex){
                throw new UnavailableException("Error: "+ex.getMessage());
            }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
    public Ciudad BuscarCiudadId(int id) throws SQLException{
        try{
            PreparedStatement ps=con.prepareStatement("SELECT * FROM Ciudad WHERE CodCiudad="+id);
            ResultSet rs=ps.executeQuery();
            Ciudad c=null;
            if(rs.next()){
                c=new Ciudad(rs.getString("Nombre"), rs.getString("Pais"), rs.getString("IdiomaOf"));
                c.setCodCiudad(rs.getInt("CodCiudad"));
            }
            return c;
        }
        catch(SQLException ex){
            throw ex;
        }
    }
}
